Answer:
Step-by-step explanation:
We need to expand cos(a+b) using the cos addition formula.
We know that we also need to use Euler's formula for sin, which is:
(you can get this from a similar way of getting the first result, of simply just expanding and seeing the necessary result)
We can now substitute our cos's and sin's for e's
Now lets multiply out both of our terms, I'm using the exponent multiplication identity here ()
Now we can subtract these two terms.
This is starting to look a lot tidier, let's cancel the 2
Answer:
Step-by-step explanation:
Given that A perfume company claims that the mean weight of ther new perfume is at least 8.9 fluid oz
For testing this claim, in Statistics we perform a certain measures called hypothesis testing.
For this first step is to create null and alternate hypothesis.
Normally null hypothesis would have some statistic = something
Here we want to test the mean weight of perfume
Hence null hypothesis would be
H0: mu = 8.9 fl oz.
Alternate hypothesis would be opposite of this claim
i.e.
Ha: mu ≠8.9 fluid oz
Hence answer is
Answer:
Dean ran 8.0467 kilometers
Step-by-step explanation:
First, you need to know how much kilometers are in a mile. 1 mile is 1.60934 kilometers, so once you found that out, then you would do 1.60934x5 which gets you 8.0467. Hope it helps!
It would seem to come out as <span><span>486<span>x^2</span></span><span>y^5</span></span><span><span>−162</span><span>x^<span>3.
But I can't read the problem correctly. </span></span></span>
keeping in mind that 250 days is not even a year, since there are 365 days in a year, assuming so, then 250 days is really 250/365 years.